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gl_shader_decompiler: Implement LOP instructions.
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5673ce39c7
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@ -229,6 +229,14 @@ union Instruction {
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BitField<42, 1, u64> negate_pred;
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} fmnmx;
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union {
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BitField<39, 1, u64> invert_a;
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BitField<40, 1, u64> invert_b;
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BitField<41, 2, LogicOperation> operation;
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BitField<44, 2, u64> unk44;
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BitField<48, 3, Pred> pred48;
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} lop;
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union {
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BitField<53, 2, LogicOperation> operation;
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BitField<55, 1, u64> invert_a;
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@ -476,6 +484,9 @@ public:
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I2I_C,
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I2I_R,
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I2I_IMM,
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LOP_C,
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LOP_R,
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LOP_IMM,
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LOP32I,
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MOV_C,
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MOV_R,
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@ -675,6 +686,9 @@ private:
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INST("0100110000000---", Id::BFE_C, Type::Bfe, "BFE_C"),
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INST("0101110000000---", Id::BFE_R, Type::Bfe, "BFE_R"),
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INST("0011100-00000---", Id::BFE_IMM, Type::Bfe, "BFE_IMM"),
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INST("0100110001000---", Id::LOP_C, Type::ArithmeticInteger, "LOP_C"),
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INST("0101110001000---", Id::LOP_R, Type::ArithmeticInteger, "LOP_R"),
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INST("0011100001000---", Id::LOP_IMM, Type::ArithmeticInteger, "LOP_IMM"),
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INST("000001----------", Id::LOP32I, Type::ArithmeticIntegerImmediate, "LOP32I"),
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INST("0100110001001---", Id::SHL_C, Type::Shift, "SHL_C"),
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INST("0101110001001---", Id::SHL_R, Type::Shift, "SHL_R"),
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@ -1043,12 +1043,7 @@ private:
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}
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case OpCode::Type::ArithmeticInteger: {
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std::string op_a = regs.GetRegisterAsInteger(instr.gpr8);
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if (instr.alu_integer.negate_a)
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op_a = '-' + op_a;
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std::string op_b = instr.alu_integer.negate_b ? "-" : "";
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std::string op_b;
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if (instr.is_b_imm) {
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op_b += '(' + std::to_string(instr.alu.GetSignedImm20_20()) + ')';
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} else {
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@ -1064,6 +1059,12 @@ private:
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case OpCode::Id::IADD_C:
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case OpCode::Id::IADD_R:
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case OpCode::Id::IADD_IMM: {
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if (instr.alu_integer.negate_a)
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op_a = "-(" + op_a + ')';
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if (instr.alu_integer.negate_b)
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op_b = "-(" + op_b + ')';
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regs.SetRegisterToInteger(instr.gpr0, true, 0, op_a + " + " + op_b, 1, 1,
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instr.alu.saturate_d);
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break;
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@ -1071,12 +1072,33 @@ private:
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case OpCode::Id::ISCADD_C:
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case OpCode::Id::ISCADD_R:
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case OpCode::Id::ISCADD_IMM: {
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if (instr.alu_integer.negate_a)
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op_a = "-(" + op_a + ')';
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if (instr.alu_integer.negate_b)
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op_b = "-(" + op_b + ')';
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std::string shift = std::to_string(instr.alu_integer.shift_amount.Value());
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regs.SetRegisterToInteger(instr.gpr0, true, 0,
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"((" + op_a + " << " + shift + ") + " + op_b + ')', 1, 1);
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break;
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}
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case OpCode::Id::LOP_C:
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case OpCode::Id::LOP_R:
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case OpCode::Id::LOP_IMM: {
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ASSERT_MSG(!instr.alu.lop.unk44, "Unimplemented");
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ASSERT_MSG(instr.alu.lop.pred48 == Pred::UnusedIndex, "Unimplemented");
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if (instr.alu.lop.invert_a)
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op_a = "~(" + op_a + ')';
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if (instr.alu.lop.invert_b)
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op_b = "~(" + op_b + ')';
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WriteLogicOperation(instr.gpr0, instr.alu.lop.operation, op_a, op_b);
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break;
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}
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default: {
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NGLOG_CRITICAL(HW_GPU, "Unhandled ArithmeticInteger instruction: {}",
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opcode->GetName());
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